1341 Edmée

1341 Edmée, provisional designation 1935 BA, is a rare-type metallic asteroid from the central region of the asteroid belt, approximately 27 kilometers in diameter.

1341 Edmée
Discovery [1]
Discovered byE. Delporte
Discovery siteUccle Obs.
Discovery date27 January 1935
Designations
(1341) Edmée
Named after
Édmée Chandon
(French astronomer)[2]
1935 BA · 1929 WB1
1932 NK · 1957 YK
1963 KJ · A917 DA
main-belt · (middle) [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc100.28 yr (36,626 days)
Aphelion2.9612 AU
Perihelion2.5227 AU
2.7420 AU
Eccentricity0.0799
4.54 yr (1,658 days)
298.49°
0° 13m 1.56s / day
Inclination13.084°
107.54°
141.11°
Physical characteristics
Dimensions23.859±0.556 km[4]
26.79±8.56 km[5]
27.14±0.73 km[6]
27.49±1.1 km (IRAS:17)[7]
5.9476±0.0011 h[8]
11.89±0.01 h[9]
23.745±0.005 h[10]
23.75±0.01 h[11]
0.1371±0.011 (IRAS:17)[7]
0.144±0.009[6]
0.16±0.06[5]
0.182±0.028[4]
Tholen = XB [1] · XB [3]
B–V = 0.700[1]
U–B = 0.262[1]
10.14±0.41[12] · 10.320±0.001 (R)[8] · 10.58[1][3][4][5][6][7]

    It was discovered on 27 January 1935, by Belgian astronomer Eugène Joseph Delporte at Uccle Observatory in Belgium, and later named after French astronomer Édmée Chandon.[2][13]

    Orbit and classification

    Edmée orbits the Sun in the middle main-belt at a distance of 2.5–3.0 AU once every 4 years and 6 months (1,658 days). Its orbit has an eccentricity of 0.08 and an inclination of 13° with respect to the ecliptic.[1] In 1917 it was first identified as A917 DA at Heidelberg Observatory. The body's observation arc begins at Uccle, on the night following its official discovery observation in 1935.[13]

    Physical characteristics

    Edmée is classified as a rare XB-type in the Tholen taxonomy, an intermediary between the X and B type asteroids.[1][3]

    Rotation period

    American astronomer Robert Stephens obtained several rotational lightcurves of Edmée between 2004 and 2014. Best rated results include an observation taken at the Goat Mountain Research Observatory (G79) during the body's 2009-opposition, which gave a rotation period of 23.745 hours with a brightness variation of 0.05 magnitude (U=2+),[10] superseding an alternative period solution of 11.89 (U=2).[9]

    Because Edmée's rotation is similar to that of Earth, photometric observations are challenging.[11][lower-alpha 1] In 2013, a much shorter period was derived from a fragmentary lightcurve at the Palomar Transient Factory in California (U=1).[8]

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Edmée measures between 23.86 and 27.49 kilometers in diameter, and its surface has an albedo between 0.137 and 0.182.[4][5][6][7] The Collaborative Asteroid Lightcurve Link adopt the results from IRAS, that is, an albedo of 0.1371 and a diameter of 27.49 kilometers with an absolute magnitude of 10.58.[3]

    Naming

    This minor planet was named in honour of French astronomer Édmée Chandon.[2] Naming citation was first mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 122).[2]

    Notes
    1. Lightcurve plot of (1341) Edmée from its 2014-observation (Robert Stephens), published by the Center for Solar System Studies (CS3) in Landers, California.

    References
    1. "JPL Small-Body Database Browser: 1341 Edmee (1935 BA)" (2017-06-04 last obs.). Jet Propulsion Laboratory. Retrieved 25 July 2017.
    2. Schmadel, Lutz D. (2007). "(1341) Edmée". Dictionary of Minor Planet Names – (1341) Edmée. Springer Berlin Heidelberg. p. 109. doi:10.1007/978-3-540-29925-7_1342. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (1341) Edmée". Asteroid Lightcurve Database (LCDB). Retrieved 13 January 2017.
    4. Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 13 January 2017.
    5. Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. Retrieved 13 January 2017.
    6. Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 17 October 2019. (online, AcuA catalog p. 153)
    7. Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 22 October 2019.
    8. Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 13 January 2017.
    9. Stephens, Robert D. (December 2004). "Photometry of 1196 Sheba, 1341 Edmee, 1656 Suomi, 2577 Litva, and 2612 Kathryn". The Minor Planet Bulletin. 31 (4): 95–97. Bibcode:2004MPBu...31...95S. ISSN 1052-8091. Retrieved 13 January 2017.
    10. Stephens, Robert D. (January 2010). "Asteroids Observed from GMARS and Santana Observatories: 2009 June - September". The Minor Planet Bulletin. 37 (1): 28–29. Bibcode:2010MPBu...37...28S. ISSN 1052-8091. Retrieved 13 January 2017.
    11. Stephens, Robert D. (January 2015). "Asteroids Observed from CS3: 2014 July - September". The Minor Planet Bulletin. 42 (1): 70–74. Bibcode:2015MPBu...42...70S. ISSN 1052-8091. Retrieved 13 January 2017.
    12. Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 13 January 2017.
    13. "1341 Edmee (1935 BA)". Minor Planet Center. Retrieved 13 January 2017.

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